brick kiln



(Holanda-1.) 4 2 sheets-sheet; w. NGRAVBS.

BRIUK KILN.

No. 292,427.- vPatented @11.22, 1884.

v Inventor; i wm N NITRD STATES PATENT OFFICE.

WILLIS n. GRAVES, OF Sr. LOUIS, MISSOURI, ASSICNOR' or CRHALF To THR HYDRAULIC PRESS BRICK COMPANY, CFSAMR PLACE'. r

BRICK-Kim.

SPECIFICATION forming part of Letters Patent No. 292,427, dated January 2, 1884.

Application filed JaxnuaryO, 1883. (No model.)`

and in Which- Figurel is part in top View and part in horizontal section, taken on line 1 l, Fig. 2.- Fig. 2 is a vertical section taken on line 2 2, Fig. l. Fig. 3 is a front view, showing the gasilues in transverse Section, taken on line 3 3, Fig. l. Fig. 4 is a vertical section taken on line 4 4, Fig. 5. Fig. 5 is a horizontal section taken on line 5 5, Fig. 4; and Fig. 6 is a detail transverse vertical section taken on line 6 6, Fig. 5.

My present invention relates to a kiln in which gasis used as fuel; and my invention consists in points of novelty hereinafter fully described and claimed.

Referring to the drawings, A represents a number of kiln-chambers separated by pierwalls A, and one or more series (l have shown two) maybe placed side by side and connected: by suitable lues and pipes, as hereinafter'described.

B represents a gas-generator. (See Fig. l.) There would preferably be one for each Series, communicating with a main gasue, C, which has branch iiues C', extending at right angles along the pier-walls, one for each kiln-chamber, as shown plainly in Fig.'4. The branch iiues near the main Ilues are made deeper than they are after entering the kiln, (see Fig. 6,) and here they are provided with horizontal diaphragms D, beneath which the gas enters from the main iiue, provided with openings D', which form seats for valves D?, whose stems extend up through the tops of the iiues, Where they can bereached to operate the valves, and

" thus it will be seen that the amount of gas entering any one branch lue can be controlled at will or entirely closed off without interferingwith the other branch lues. From the branch flues the gas escapes into the combustion-chambers E through openings E in the bottom of the chamber, which can be partly 5o or altogether closed at will by tile-blocks E, which act as valves, one for each opening, and can be operated by a suitable instrument inserted into the combustioirchambers by opening the doors E, and thus the amount of gas entering any part of 'a combustion-chamber can be controlled. The air for combustion preferably passes from a kiln-chamber down through the open Iloor into the distributingiiues F, (see Fig. 5,) which communicate with 6o a line, G, beneath and communicating with a flue', H, by means oi openings G, which can be partly or wholly closed by tileblocks G2, operated by means of a suitable instrument inserted into the iiue H by opening its door 6 5 H. The lines H communicate with the combustionschambers by means of openings A2 in the pier-walls between the kiln-chambers, and by opening or closing the valves between the fines G and H it will be seen that the amount 7o of air entering any part oi' the combustion chamber can be controlled at will, there being au opening, A2, for each opening G, as shown. rlhe iiues G communicate at one end with a main iiue, l, that leads to the chimney or uptake J, and they are provided with dampers or valves G3, so that the communication can be regulated or entirely closed. 'From the chamber E the products of combustion pass up through a passage, K, shut off from the'So main kiln by a bridge-wall, K', and down through the mass of bricks, (see arrows, Fig; 4,) and from there into the ues G, asA described, from where they escape either into the main ilue I or into the next'kiln-chamber 8 5 by way of the i'lues H and openings A, or, if it is the last kiln of a series, they may, as shown in Fig. 4, escape into an end iiue, L, through openings L in the end of the kiln,

each series beingprovided with such a flue, 9o

which communicate with a flue, M, beneath and connecting them, and thus the heat from one series may be transferred to the other.

When akiln has been burned,the heat can be made use of for drying a kiln of green bricks by taking the heat from the top of the chamber of burned bricks through passages N into nues N', which communicate with main fines N2. The passages N are controlled by valves Ni, whose stems extend up through the tops of the fines N', and by these valves the heat may be discharged from the main fine XZ into any part of any kiln-chamber desired.

I have shown four openings on each side of each kiln-chamber comlnunicating with thc ilues N. (See Fig. 5.) rIhe main iiues Ni of cach series may be connected by pipes O, (see Figs. 1 and 2,) so that this heat can be transferred from one series to the other. The bri d gewalls K are strengthened by ties K. (Sec Figs. 4: and 6.)

l represents openings in the tops of the kiln-chambers, closed by valves P', to ventilate or allow the escape of heat when desired. If desired, this above-mentioned hot air can be taken from one kiln-chamber into one adjoining it without passing into the main fine N, as will be plainly seen, and the air thus supplied, if the kiln into which it enters is undergoing the burning process, may assist in the more thorough combustion of the gases, practically forming a second combustionchamber near the top of the passage or llue K.

I have shown and described the gas-fines C/ as being beneath the conibustion-chambers E; but I do not wish to confine myself to such a location, as they may be at onc side or elsewhere.

' I claim as my inventionl. In a brick-kiln, the combination of a main chamber, A, having side walls and a perforated iioor, a gas-fine on one side of the chamber, beneath the iioor, a bridge-wall on one side of the chamber, above the ioor,for1n ing a combustion-chamber, E, in communication with the fine and directing thc products of combustion to the top of the main chamber, and valves to control the supply of gas to the combustion-chamber, as set forth.

2. In a brick-kiln, the combination of a main chamber, A, having side walls and a perforated floor, a main gas-flue, C, branch ilue C on one side of the chamber,beneaththe floor, diaphragm D between the lucs, having opening D and valve D2, and bridge-wall K on one side of the main chamber, above the iloor,forming combustion-ehamber E over the branch iiue, as set forth.

3. In a b1icl{kiln, thecomhinatiomwith the main chamber having open floor, of the dis' tributing-ucs F and the lower ilue,.(}, bcneath the floor, upper Hue, II, above the floor, having openings to the lower ilue beneath, and the pier-walls, having openings A2 to conneet another main chamber with the upper ilue, as set forth.

4. In a brick-kiln, the combinatiomwith a main chamber having an open floor in communication with distributing-lines, of the gasiue on one side, beneath the oor, a combustion-chamber above the gas-flue and iloor, a lower line on the other side in communication with the distributing-fines, and an upper flue above the floor, and lower flue, having suitable outlet, as set forth.

5. In a brick-kiln, the combination, with two main cha1nbers,A A, of the pier-wall A, formed with longitudinal fine N at top, connected with the main chambers by passages N, controlled by suitable valves, as set forth.

G. In a brick-kiln, the combination, with a series of main chambers divided by pierwalls A, each having a flue, N', at top, and passages N, connecting the adjoining main chambers with the iiue, of the main i'lue connecting the top fines, as set forth.

7. In a brick-kiln, the ilues O, connecting the main lines, in combination with the top fines of series of main chambers, as set forth.

W'ILLIS X. GRAVES.

In presence of- C. STERLING, ino. K. KNIGHT. 

